can somebody explain to me what this means and when it matters?
sometimes when I'm working on a model that is in rollback mode and I switch to the assembly, everything is fine. I can go into the assembly and look at things, take cross sections, measure, etc. other times, I get a message that tells me the assembly is not accessible because a part is in rollback mode.
I can't figure out why this happens. it happens sometimes on the same part that previously worked just fine. sometimes I have to roll the model past some features and then it will work even though it's still rolled above other features. it's quite annoying because I don't know what circumstances cause the assembly to be accessible or not. it's also annoying to have to roll the part model to a point, make a change, then roll to end just to switch to the assembly to see how things look and then promptly roll the part back to make more changes.